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Diagram of the distribution of true positives, false negatives, false positives, and true negatives using ASPECTS cut-off values <6 and CTP rCBV 40% >34 mL. Considering the 25% prevalence of MCI in our study cohort, ASPECTS identified 8 true positives, with 17 false negatives and 5 false positives. The rCBF cut-off identified 16 true positives, with 9 false negatives, and 8 false positives.
